Case liner



June 28, 1938. H. M. HANsoN- 2,122,317

CASE LINER Filed June 14, 1937 Patented June 28, 1938 CASE LINER Harry M. Hanson, Shelbyville, Ind., assignor to The Kennedy Car Liner & Bag Co., Shelbyville, Ind., a corporation of Indiana Application June 14, 1937, Serial No. 148,148

3 Claims.

This invention relates to case liners.

It has for one of its objects the provision of a foldable liner the bottom portion of which is an integrally folded piece forming bottom and sides with seamless corners, associated unitarily with a tubular member forming the upper sides of the case liner.

Another object of the invention is to provide a case liner of the type described in which the bottom member is telescoped into the tubular member, the latter being folded beneath the edges of the bottom member and being adhered thereto so as to constitute a reinforcement for all lines of fold of the lower portion of the liner.

Other objects of the invention will appear as the following description of a preferred and practical embodiment thereof proceeds.

In the drawing throughout the several figures of which the same characters of reference have been employed to designate identical parts:

Figure 1 is a perspective view of the tubular member of the case liner of the present invention, viewed from beneath;

Figure 2 is a perspective View of the bottom member of the case liner viewed from above;

Figure 3 is a perspective view from beneath of the assembled case liner in expanded condition;

Figure 4 is a perspective View of one end of the case liner in folded condition; and

Figure 5 is a fragmentary sectional view through the case liner when in expanded condition.

lBefore adverting to a detailed description of the invention, it will be understood that the object of case liners is to protect the valuable contents of the cases from damage in storage or transportation due to the seepage of dust, dirt, and particularly moisture. Before the advent of the present invention, the conventional case liner consisted of flat bottom portion to which the sides or tubular portion were adhesively attached. A pasted seam was thus present all around at the level of the bottom which when subjected to dampness would seep, giving free access of moisture to the contents of the case.

Referring now to Figure 2, it will be understood that the bottom or tray member I therein depicted consists of a sheet of flexible material such, for example, as paper which may be water-proofed or not, according to the utilization to which it may be subjected. It is folded up on four sides to form a flat bottom 2 with integral sides and ends 3 and 4 respectively. The corners are folded inwithout cutting as indicated at 5 so as to produce seamless corners for the full height of the tray. Where waterproof material is employed a thoroughly impervious receptacle is thus provided which does not rely upon joined parts either pasted or otherwise secured for its structural integrity.

The tubular member 6 shown in Figure 1 is of parallelepipedal form when expanded and is of such size as to closely embrace the bottom member I when the latter is inserted within t.- The tubular member 6 is folded to form theside. and end 10 flanges 'I and 8, respectively, which underlie the bottom 2 of the tray I when the latter is pushed down to its fullest extent into the tubular member, as is illustrated in Figure 3. Preferably those surfaces of the tubular member and tray which 16 contact one another are pasted together, thus to form a double wall reinforcement for the folded corners and bottom edges of the tray member.

The entire case liner thus formed is foldable in usual manner into flat condition. First, both 20 sides 9 and I0 of the tubular member are folded inwardly until they come together on the center line IIv of the bottom. This forms the outwardly extending triangulark portions I2, see Figure 4. Those portions of the two side members 9 and I0 25 which are congruent are then folded to one side of the center line of the bottom as illustrated in Figure 4 and the triangular portion I2 together with the coincident portions of the sides adjacent thereto are folded along the line I3 against the 30 bottom forming a i-lat package. The case liner is expanded in the manner of an ordinary bag.

By. the selection of a blank of proper size, the sides of the integrally folded tray member I may 35 be of any desired height.

'While I have in the above description defined what I believe to be a preferred and practical embodiment of the invention, it will be understood to those skilled in the art that the specific 40 details of construction and arrangement of parts as shown and described are by way of example and not to be construed as limiting the invention as defined in the appended claims.

What I claim is:

1. Case liner comprising a tray member integrally folded to provide a bottom, sides and seamless corners, and a tubular member forming a depthwise extension of the sides of said tray member, said tubular member fitting the bottom 50 dimensions of said tray member into which said tray member is inserted, said tubular member having in-folded flanges at its lower end underlying and contacting the bottom of said tray member, said flanges forming reinforcements for the 55 peripheral lines of fold defining the bottom of said tray member.

2. Case liner comprising a foldable bag including a tray member integrally folded to provide a bottom, sides and seamless corners, and a tubular member forming a depthwise extension of the sides of said tray member, said tubular memkber fitting the bottom dimensions of said tray member and into which said tray member is inserted, said tubular member having in-folded flanges at its lower end underlying and contacting the bottom of said tray member, the contactn 

